Steve, please note that the mapping robots are not "built by
Penobscot Bay Media", but purchased from MobileRobots Inc, an
11-year-old robot design and manufacturing company with
thousands of robots sold around the world. The robot in
question is called MapperBot and uses laser-based SLAM to
develop the raster-based map, which can then be edited for
human viewing and/or robot navigational purposes. You can
see this and many more robot applications at
www.mobilerobots.com. What Penobscot Bay Media does is to
create interior building maps with MapperBot that they then
expand to 3D and incorporate into GIS databases for space
utilization and other purposes.